Q: What are the prime factors of the number 764,744,328?

 A: 2, 3, 131129

Why are those the prime factors of the number 764,744,328?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 764,744,328

764,744,328
Factor Arrows
2382,372,164
Factor Arrows
2191,186,082
Factor Arrows
295,593,041
Factor Arrows
331,864,347
Factor Arrows
310,621,449
Factor Arrows
33,540,483
Factor Arrows
31,180,161
Factor Arrows
3393,387
Factor Arrows
3131,129

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 131129

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 3 x 131,129 = 764,744,328

This can also be written as 23 x 36 x 131,1291 = 764,744,328

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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